So what makes an XKR-S GT such a handling machine?

Short answer, the F-Type... quite a lot of the rear suspension of the XKR-S GT are off-the-shelf F-Type components, and some other pieces are borrowed from other Jag models;

Rear subframe = F-Type
Rear upper wishbone = F-Type
Rear lower wishbone = F-Type
Rear hub carriers = F-Type

Front vertical links are unique to the XKR-S GT, presumably in order to fit the carbon ceramic brakes... £7000 each! (that's not a typo!)

Front lower front wishbone = XF
Front lower rear wishbone = unique to the XKR-S GT (£700 each!)

Steering rack = F-Type

Front upper wishbones are standard X150 items.

Front sway bar is from the XF, rear is a unique item to the GT for £1000

Front strut assembly (spring + shock) unique to the GT £3300 each
Rear strut assembly (spring + shock) unique to the GT £3500 each

The brakes... well actually they're all the same carbon-ceramics as the F-Type...

To accomodate the wider rear track the GT uses the rear driveshafts (halfshafts) from the X351 XJ SuperSport, with the standard XKR E-Diff

All this is very interesting to me, you could in theory take a wrecked 2014/2015 F-Type and transplant a hell of a lot of it into an XKR...

Hmmm....

 

The XKRS GT rear wing = 10.000.-- Euros

 

I was under the impression that the XKRS-GT was developed and sold prior to the market introduction of the F-Type. If that is the case then is it possible that the F-Type components come from the XKRS-GT instead of the other way around. Just wondering which came first , the chicken or the egg.

 

Thanks for the interesting find. It would still be alot of work to even strip a donor wracked GT and install everything on a XKR.

I like everything on the GT except for the huge wing.

 

It may be that the GT was the development car for the F-type.

When the F-type came out I was disappointed with it. I was hoping to see a more innovative super car design similar to the X-C75 with AWD. I bought my second XKR, 2013 XKR, after seeing the F-type. Now if the X-C75 was produced in some form I would be in line for one.

 

The F-Type was on the market before the GT (by some months), and the F-Type was also a few years in development before that as well.

In the parts catalogue you can see those shared parts have F-Type part numbers, so it's F-Type production parts on the GT.

 

DGL,

You're in luck, and it's affordable - only $250! It's available now, just in time for Christmas! Target : Expect More. Pay Less.



You might need a shoehorn...

Stuart

 

Damn, that was just nasty. You had me so excited. I read the thread before seeing this post.

 

DGL,

Well, you did say that " ... if it was produced in some form I would be in line for one." I just gave you the opportunity to fulfill your wishes.

Bottom line is that you have to be careful about what you wish for. As stated a long time ago by my favorite 20th century philosopher who is still living: "You can't always get what you want. .."

Stuart

 

Well this thread is worthless now, thanks for dragging it way off topic...

 

LOLOMA!

 

Ready to be parted...

 

Where is this car? I would love to buy the wheels & brakes.

 

2014 Jaguar XKR-S GT 2D Coupe - S69751-0003

 

Back on topic...
Something I've been wondering about, & looking into, is the differences between the front and rear subframes between the DEW98-based Jaguar models (i.e. S-Type, XF, XJ X350/X358, XK X150, F-Type). I know there's compatibility between them as far as the suspension components, but the subframes are another matter. Logic dictates that the subframes would be very similar since so many parts are both shared & swapped between the models by repair facilities and even JLR themselves. So far it's all been theory, since getting a bunch of different subframes together to compare the critical measurements isn't really feasible for me at the moment, but if they are swappable, that would potentially open the door for some enterprising person to modify their car with the best factory-designed parts available, or modify their existing parts to match the specs. Just my thoughts...

 

I don't know about compatibility but for sure the subframes on the different models you mention all have different part numbers.

It's somehow odd that the rear subframe of the F-Type and the XKR-S GT are the same part, none of the other vehicles I checked have the same crossover.

There are some other peculiarities, for example the XKR Portfolio has a unique rear subframe which is different to the other X150's...

The XFR-S has a different rear subframe than the other XF's

 

I guess a lot of that is determining what Jaguar considers "unique". The main difference between a Gen 1 & Gen 2 S-Type rear subframe is the mount for the electric parking brake actuator. I've read that the XFR-S rear subframe is supposed to be of a thicker tubing, but the hard points have to be the same since most of the other stuff is the same. The upper & lower A-arms, axles, & differential mean it has to be able to physically fit in the same space. Model year changes prove that out too.

 

Well in the case of the XKR Portfolio I really cannot guess what makes the rear subframe special. If it was the Alcon brakes then it would be listed for the 2008 XKR-S as well, and many other 4.2L XKR were also fitted with the Alcon's from the factory, so I don't think that's it...

 

I thought it was the hubs that were specific for the Portfolio, to fit the Alcon calipers. As far as the other stuff, there are some precedents to Jaguar making initial changes with a specific model & then just making rolling changes across a whole line. Like the SC stamped parts for example

 

So another interesting bit of info I just stumbled across.

The regular XKR-S (not the GT) also has a different steering rack to the XK and XKR.

And it goes further, the limited edition 4.2L 2008 XKR-S (the black ones, sold in Europe) also has a unique steering rack which has a faster ratio than the 4.2L XK & XKR.

A report from autocar.co.uk said that the 5.0L XK got the faster ratio rack from the 2008 XKR-S as standard, although the part numbers don't confirm that.

And then the later model XKR-S has a different rack again, presumably a faster ratio still? There is something special about them...

The prices of the racks are a bit nasty though...

4.2 XK/XKR rack is £2000
4.2 XKR-S rack is £2700
5.0 XK/XKR rack is £1600
5.0 XKR-S rack is £2700

Damn... who wouldn't want a faster rack, but at those prices... ouch...

Ironically, the regular F-Type rack (as per the XKR-S GT) is "only" £1270, and you can guess that is the one to have, since they put it in the GT...

So rack out of an F-Type up to 2015MY is probably a nice upgrade on the X150's. Presuming it's a direct bolt-in, which it appears to be based on the XKR-S GT...

Although there may be some issues with this idea...

The XKR-S GT is reported to have a wider front track than the regular XKR (52mm more in total, or an inch each side), and the tie rod ends / ball joints for the GT are listed as F-Type parts. So could be that there isn't enough adjustment in them for the narrower XK/XKR track. The regular XKR-S tie rod ends / ball joints are the same part for the XK/XKR...

Chris Harris banged on about the steering in the GT...